# this models computes the \zeta_l function for the item l 
# whose variable has been set to 1.
# this value will be used to generate the coefficient of item l 
# in the LHS of a lifted cover inequality. 

# the main file makes sure that only for one i at a time it will
# be the case that FIXED is equal to 1. 


maximize PRElift: sum {i in N} COEFF[i]*w[i];

subject to isfeasible:
sum{i in N} inputdata[i,'Weight']*w[i] <= MaxCapacity;

subject to fixit{i in N : FIXED[i] = 1}:
	w[i] = 1;
